ML19249B933
| ML19249B933 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 08/15/1979 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Nichols T SOUTH CAROLINA ELECTRIC & GAS CO. |
| References | |
| NUDOCS 7909070108 | |
| Download: ML19249B933 (2) | |
Text
,
[em a r cqo UNITED STATES
! '$. '- p' %
NUCLEAR REGULATORY COMMISSION I
% '"#/
E REGION 11 3 rw
[
101 MARIETT A ST., N W., SUITE 3100 5,
[
AT L ANT A, GEORGI A 30303 AUG 151979 In Reply Refer To:
RII:JP0 50-395 South Carolina Electric and Gas Company Attn:
T. C. Nichols, Jr., Vice President Power Production and System Operations Post Office Box 764 Columbia, South Carolina 29218 Gentlemen:
The enclosed supplement to Bulletin 79-14 is forwarded to you to provide added guidance on the intent of the Bulletin.
If you desire additional information regarding this matter, please contact this office.
Sincerely,
[
s-s
{ James P. O'Reilly Director
Enclosures:
1.
Supplement IE Bulletin No. 79-14 2.
List of IE Bulletins Issued in Last Six Months
' ')>
('
't 7909070 / Cf f
u s' 4 r. y37C' South Carolina Elect ric
, and Gas Cocrpany cc w/ encl:
T. B. Conners, Jr.
Conners, Moore and Corber 1747 Pennsylvania Avenue, N.W.
Washington, D.C.
20CN.
A. A. Sc2tb Quality Assura:a e Post Office Ecx 6 Jenkinsville, Sot.tt Carolina 29H.,
O. S. Bradham, Manager Nuclear Operatinns Post Office B x 6 Jenkinsville, Scuti. Ca r olina 2'E4 5 u 6 a JU
,.ua o
'r'ID'l(E ] j~h M Ii b0
- ]J d Ub i
N
SSINS: 6820 Accession No:
7908080360 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON,
D.C.
20555 August 15, 1979 Supplement IE Bulletin No. 79-14 SEISMIC ANALYSIS FOR AS-BUILT SAFETY-RELATED PIPING SYSTEMS Description of Circumstances:
IE Bulletin No. 79-14 was issued on July 2, 1979 and revised on July 18, 1979.
The bulletin requested licensees to take certain actions to verify that seismic analyses are applicable to as-built plants. This supplement to the bulletin provides additional guidance and definition of Action Items 2, 3, and 4.
To comply with the requests in IE Bulletin 79-14, it will be necessary for licensees to do the following:
2.
Inspect Part of the Accessible Piping For each system selected by the licensee in accordance with Item 2 of the Bulletin, the licensee is expected to verify by physical inspection, to the extent practicable, that the inspection elements meet the acceptance criteria.
In performing these inspections, the licensee is expected to use measuring techniques of sufficient accuracy to demonstrate that acceptance criteria are met.
Where inspection elements important to the seismic analysis cannot be viewed because of thermal insulation or location of the piping, the licensee is expected to remove thermal insulation or provide access. Where physical inspection is not practicable, e.g., for valve weights and materials of construction, the license is expected to verify conformance by inspection of quality assurance records.
If a nonconformance is found, the licensee is expected in accordance with Item 4 of the Bulletin to perform an evaluation of the significance of the nonconformance as rapidly as possible to determine whether or not the operability of the system might be jeopardized during a safe shutdown earthquake as defined in the Regulations. This evaluation is expected to be done in two phases involving an initial engineering judgement (within 2 days), followed by an analytical engineering evaluation (witnin 30 days). Where either phase of the evaluation shows that system operability is in jeopardy, the licensee is expected to meet the applicable technical specification action statement and complete the inspections required by Item 2 and 3 of the Bulletin as soon as possible. The licensee must report the results of these inspections in accordance with the require-ments for content and schedule a DUPLICATE DOCUMENT 3.
Inspect Remaining Piping Entire document previously entered The licensee is expected to insF into syctem under:
safety-related piping systems wt report the results in accordance ANO N O60$C 3[> h schedule as given in Item 3 of t No. of pages:
53 g '.
dUU
~.